Abstract
Our aim was to evaluate cephalometrically the preoperative inclination of the incisors
in a group of 50 patients with Class III dentofacial deformities whose immediate preoperative
lateral cephalometric radiographs were analysed after they had been treated by maxillary
advancement. The radiographs were hand-traced by the same operator who made the cephalometric
analysis. Mean values for each measurement were compared with the normal values using
Student's t-test (p < 0.05). Results showed significantly increased inclination of the upper incisors, with
a mean U1-NA angle of 27.58° and a mean U1-PP angle of 116°. The lower incisors were
also inclined lingually, with a mean L1-NB angle of 22.53° and a mean IMPA of 83.13°.
Thirty-five of the patients had labial inclination of the upper, and 28 lingual inclination
of the lower, incisors. Mean inclinations of upper and lower incisors differed from
the normal values, and the inclination of the lower incisors was more likely to be
decompensated than that of the upper incisors.
Keywords
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Article info
Publication history
Published online: December 12, 2011
Accepted:
October 3,
2011
Identification
Copyright
© 2011 The British Association of Oral and Maxillofacial Surgeons. Published by Elsevier Inc. All rights reserved.
